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Solution

For extended temperature range simulations associated with other grade devices such as defense or space grade, it is recommended that the Virtex-4 and Virtex-5 HSPICE models are used, and temperature can be set to the appropriate corners.

Xilinx does provide IBIS .pkg files for most defense and space grade devices to model the per-pin package specific parasitics associated with the defense/space grade packages for signal integrity simulations.

Users can read the pin RLC values from the IBIS .pkg files, and then include those values into the HSPICE simulation.